Rotary engine



r (NoModelQ) I I J. E. S NEVELY.

ROTARY ENGINE". No. 381,287. Patented-Apr. 17'. '1888'.

JAMES E. SNEVELY, OF CHETOPA, KANSAS.

. ROTARY ENGINE;

SPECIFICATION forming part of Letters Patent NO. 3s1.2a7,aateaA rn'17,1833. 7,

' Application filed December 15, 1887; Serial No. 257,947. (No model.) 7

.To all whom it may concern-1 Be it known that 1, JAMES E.

Kansas, have invented. a new and Improved 5 RotaryEngine, of which thefollowingis a full,

clear, and exact description. p v

This invention relates to reversible rotary engines, and has for itsobject to provide a rotary enginewhich will operate easily and will bedurable.

The invention consists in a rotary engine constructed and arranged ashereinafter described and claimed. 1

Reference is to be had to the accompanying r drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a transverse vertical section of the invention, withsupportsand steam-pipes broken away- Fig. 2 is a vertical section on theline was of Fig. 1; and Fig. 3 is a detail view ofthe piston, showingits inlet and outlet steam-ports.

In this invention thesteam is introduced into the piston, and thel'atter(which is eccentrio) rotates in a circular casing or cylinder providedwith yielding abutment-blocks which bear against the peripheryof thepiston.

In the construction otfthis rotary engine a- 3o cylinder or casing,1,;is mounted on suitable 1 supports, 2, and secured to the latter byscrews or bolts 3 passingthrough arms 4. Within the casing 1 is locatedthe piston 5, mounted on'a shaft, 6, passing through the 'casing andhaving a band-pulley, 7. The

journal-boxes 8'in the casingl are provided with suitable packing, 9,and retaining-plates tric piston -5'acts alternately to press backabutment-blocks 19, adapted to slide in recesses 20in the a'rmset of thecasing'l. To give free movement to theblocks 19, theyare v SNEvnLY, ofvOhetopa, in the county of Labette and State of PATENT O F C mountedonanti-frietion ball bearings2l,and are held in outward position bymeans 0f springs 22. Access is had to the parts just;

described by means of a removable plate, 23, secured by screws 24, Atight joint is formed 5 between the piston 5 and the annular. space 15"by means of the packing rings 25 and'the shouldered projectingportion 26of the-piston 5'and the setscrews 27, whichholdthe rings '25 againsttheprojecting-portion 26. I

The steam-supply pipe 28 connects with a passage, 29, communicating witha circular w 5 chamber, 30, in which is located a rotaryval've, .31, Bymeans of the latter steam admitted into the'passage 29 maybe directedinto either I of the branch pipes 32, connecting with steamchests 13. IThe chamber 30 also connects with a steam-discharge pipe,j3.? The valve31 is of such a shape as to freely'permit thepassage p,

of steam into one or the other of the branch I tubes32, according as itis turned by means of handle or wheel 34., and the dischargeof steamthrough the pipe 33.

"The operation is as follows: The valve 31 being in the position shown-in Fig. 2,.steamis admitted through the pipe 28, andpasses, asindicated by the arrows, through 'theright hand branch tube 32-into thesteam-chest13 and recessj12, which is at all times open to','steam-chest 13. The steam passesfrom the recess 12 through the ports 14.into the annular space on one-side of the right-hand abutmentblock 19in. Fig. 1,] and is stoppedthereby. The action of the steam causes thepiston 5 to be driven forward until the ports l t-have passed the block19, when the steam expands I and enters the space15 between the block s19. Upon the further revolution of the piston:

5 thefports 14 of the secondor opposite recess 12 are brought around tothe annular space 15 between the blocks 19, and thesteam therein andinthe recesses 12 escapes into thelefthand steam-chest 13in Fig. 2, andpasses through the ports 14 therein and branch pipe 32, and isdischarged by" means of pipe 33.

The piston 5 continuing to revolve, the lefthand abutment-block 19 ispressed back by Q the eccentric 16, and the steam .enters*the'r'ecesses12. Upon the piston 5 reaching the too position show'nin Fi t Operation,m;

peated.

In the foregoingoperationthe right-hand contact will be made between theeccentric 16 and the casing 1 by means of the yielding block 17. Theconfiguration of the recesses in the piston will be such as to cause thesteam "to efi'ectively drive it, and the abutment-blocks will offer theleast resistance to the movement of the piston by reason of theball-bearings'and spring-cushions. It will also be seen that, owing tothe adjustability of thepartsin frictional contact, when the parts'becoine worn they will still form perfect "steam-joints'and; the pistonwill work regularly an d"sfnooth ly.

I The engine may be run by steam, water, or compressed air by varyingthesiz'e ofthep'owerinlet.

Having thus described myinvention,I'claim as new and desire to-secureby'LettersPatent' 1. In a rotary engine, thecombinatiom'with a cylinder-casing having sliding abutmentblocks, of an eccentric rotary pistonhaving S-shaped recesses opening into steam-chests branch pipes 32,passage 29, feed-pipe 28, ro-.

'taryvalve 31, and discharge-pipe 33, of an eccentric'piston, 5, havingS-shaped recesses 12, 'ports14, yielding block 17,projection 26,' 5

' andwashers 25, having set-screws 27, substan- '-tially as described.

JAMES E. sNEvELY. Witnesses:

.JNO. W. BREIDENTHAL,

L. M. BEDELL.

